DTC B2286: Runnable Signal Malfunction: Procedure

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Check for the multiplex network communication system DTCs.

   HINT: 

   If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first.

   RESULT
   
   

   Result	Proceed to
   DTC is not output.	A
   DTC is output	B

B → See step   9 

A: Go to next step 

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Check for the CAN communication system DTCs.

   HINT: 

   If the DTCs for the CAN communication system malfunction are output, inspect those DTCs first.

   RESULT
   
   

   Result	Proceed to
   DTC is not output.	A
   DTC is output	B

B → See step   10 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Power Source Control / Data List.
5. Read the Data List according to the display on the Techstream.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Condition	Engine condition/STOP or RUN	STOP: Engine is stopped RUN: Engine is running	-

   OK

   STOP (engine is stopped) and RUN (engine is running) appear on the screen according to vehicle operating conditions.

NG → See step   6 

OK: Go to next step 

1. Replace the power source control ECU. Refer to REMOVAL .

NEXT: Go to next step 

1. Clear the DTC.
2. Check for DTCs.
   RESULT
   
   

   Result	Proceed to
   DTC B2286 is not output.	A
   DTC B2286 is output (for 2GR-FSE).	B
   DTC B2286 is output (for 4GR-FSE).	C

B → See step   11 

C → See step   13 

A → END (POWER SOURCE CONTROL ECU WAS DEFECTIVE) 

1. Disconnect the J55 connector from the power source control ECU.
   Fig 1: J55 And A6 Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A6 connector from the ECM.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   J55-2 (TACH) - A6-16 (TACH)	Always	Below 1 Ω
   J55-2 (TACH) or A6-16 (TACH) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1

   Front view of wire harness connector (to Power Source Control ECU)

   *2

   Front view of wire harness connector (to ECM)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - ECM) 

OK: Go to next step 

1. Replace the power source control ECU. Refer to REMOVAL .

NEXT: Go to next step 

1. Clear the DTC.
2. Check for DTCs.
   RESULT
   
   

   Result	Proceed to
   DTC B2286 is not output.	A
   DTC B2286 is output (for 2GR-FSE).	B
   DTC B2286 is output (for 4GR-FSE).	C

B → See step   12 

C → See step   14 

A → END (POWER SOURCE CONTROL ECU WAS DEFECTIVE)